From f6167bf3c0d64c45b33235c5bf67cab63ef24d35 Mon Sep 17 00:00:00 2001
From: Daniel O'Connell <tojad99@gmail.com>
Date: Wed, 20 Apr 2022 19:00:47 +0200
Subject: [PATCH] editable recurs

---
 backend/src/chicken_master/orders.clj         | 75 ++++++++++++----
 backend/src/chicken_master/time.clj           | 87 ++++++++++++++++++-
 backend/test/chicken_master/orders_test.clj   | 40 ++++-----
 frontend/resources/public/css/screen.css      | 21 +++++
 frontend/src/chicken_master/calendar.cljs     | 27 +++++-
 frontend/src/chicken_master/css.clj           |  9 +-
 frontend/src/chicken_master/events.cljs       | 17 +++-
 .../test/chicken_master/calendar_test.cljs    | 40 +++++++--
 frontend/test/chicken_master/events_test.cljs | 45 ++++++----
 9 files changed, 283 insertions(+), 78 deletions(-)

diff --git a/backend/src/chicken_master/orders.clj b/backend/src/chicken_master/orders.clj
index 8ca0efc..01fdb23 100644
--- a/backend/src/chicken_master/orders.clj
+++ b/backend/src/chicken_master/orders.clj
@@ -37,11 +37,11 @@
            :end_date (t/to-db-date end-date))))
 
 (defn duplicate-order! [tx user-id order updates]
-    (->> updates
-         (merge {:user_id user-id})
-         (set-dates order)
-         (sql/insert! tx :orders)
-         :orders/id))
+  (->> updates
+       (merge {:user_id user-id})
+       (set-dates order)
+       (sql/insert! tx :orders)
+       :orders/id))
 
 (defn update-non-recurring [tx order updates]
   (let [order-id (:orders/id order)
@@ -55,12 +55,29 @@
       (upsert-exception! tx order-id order_date (:recurrence_exceptions/status exception)))
     order-id))
 
-(update-non-recurring db/db-uri (db/get-by-id db/db-uri 2 :orders 285) {:notes "asddqwqwd" :order_date "2020-04-19"})
-(recurrence-exception? db/db-uri 285 "2022-04-20")
+(defn update-single-item [tx user-id from-date {:orders/keys [id order_date] :as order} updates]
+  (upsert-exception! tx id (t/to-db-date (or from-date order_date)) "canceled")
+  (duplicate-order! tx user-id (dissoc order :orders/recurrence) (dissoc updates :recurrence)))
+
+(defn update-from-date [tx user-id from-date {:orders/keys [id order_date recurrence] :as order} updates]
+  (let [[recur-part-1 recur-part-2] (t/split-rule order_date recurrence from-date)]
+    (cond
+      ;; Split the order into 2, from the given date
+      recur-part-2
+      (do
+        (sql/update! tx :orders {:end_date (t/to-db-date from-date) :recurrence recur-part-1} {:id id})
+        (duplicate-order! tx user-id order (assoc updates :recurrence recur-part-2)))
+
+      ;; No need to split the event, as it's the first one
+      recur-part-1
+      (sql/update! tx :orders (set-dates order updates) {:id id})
+
+      :else nil ;; FIXME: What should happen if an invalid date is provided?
+      )))
 
 (defn upsert-order! [tx user-id customer-id {:keys [id day notes update-type order-date recurrence]}]
   (let [updates (assoc? {:customer_id customer-id}
-                        :recurrence recurrence
+                        :recurrence (some-> recurrence t/make-rule)
                         :notes notes
                         :order_date (some-> day t/to-db-date))
         order (db/get-by-id tx user-id :orders id)]
@@ -75,20 +92,26 @@
       (do (sql/update! tx :orders (set-dates order updates) {:id id}) id)
 
       (= :from-here update-type)
-      (do
-        ;; TODO: update magic recurrence rules to handle splitting stuff here
-        (sql/update! tx :orders {:end_date (t/to-db-date order-date)} {:id id})
-        (duplicate-order! tx user-id order updates))
+      (update-from-date tx user-id order-date order updates)
 
       :else ; single item modified
-      (do
-        (upsert-exception! tx id order-date "canceled")
-        (duplicate-order! tx user-id order updates)))))
+      (update-single-item tx user-id order-date order updates))))
+
+;; (db/get-by-id db/db-uri 2 :orders 267)
+;; (upsert-order! db/db-uri 2 15 {:notes "no recur1" :day "2022-04-20"})
+;; (upsert-order! db/db-uri 2 15 {:notes "recur2" :day "2022-04-18" :recurrence "FREQ=DAILY;COUNT=10"})
+;; (upsert-order! db/db-uri 2 15 {:update-type :all :id 279 :notes "recur2" :day "2022-04-18" :recurrence "FREQ=DAILY;COUNT=10"})
+;; (upsert-order! db/db-uri 2 15 {:id 267 :notes "main-default" :day "2022-04-18" :order-date "2022-04-18"})
+;; (upsert-order! db/db-uri 2 15 {:id 267 :notes "main" :day "2022-04-18"})
+;; (upsert-order! db/db-uri 2 15 {:id 267 :notes "main-all" :update-type :all :day "2022-04-18" :order-date "2022-04-18"})
+;; (upsert-order! db/db-uri 2 15 {:id 267 :notes "main-from" :update-type :from-here :day "2022-04-18" :order-date "2022-04-22"})
+;; (upsert-order! db/db-uri 2 15 {:id 267 :notes "12323" :update-type :single :day "2022-04-18" :order-date "2022-04-18"})
+;; (upsert-order! db/db-uri 2 15 {:id 260 :notes "1dsf2a" :update-type :single :day "2022-04-19"})
 
 (defn structure-order [items]
   {:id         (-> items first :orders/id)
    :notes      (-> items first :orders/notes)
-   :recurrence (-> items first :orders/recurrence)
+   :recurrence (some-> items first :orders/recurrence t/parse-rule)
    :who        {:id   (-> items first :customers/id)
                 :name (-> items first :customers/name)}
    :products   (->> items
@@ -100,7 +123,8 @@
   "Get all days between `from` and `to` (inclusively) for which the order applies."
   [from to items]
   (let [{:orders/keys [recurrence order_date]} (first items)]
-    (->> (t/recurrence->dates (t/latest from order_date) (or recurrence "FREQ=MONTHLY;COUNT=1"))
+    (->> (t/recurrence->dates order_date (or recurrence "FREQ=MONTHLY;COUNT=1"))
+         (remove #(t/before % (t/to-inst from)))
          (take-while #(not (t/after % (t/to-inst to))))
          (map #(vector (t/format-date %) :waiting))
          (into {}))))
@@ -140,7 +164,8 @@
         vals
         (map (partial items->orders from to))
         (apply concat)
-        (filter #(t/between from (:day %) to)))))
+        (filter #(t/between from (:day %) to))
+        (remove (comp #{:canceled} :state)))))
 
 (defn get-order [tx user-id id & [day]]
   (first
@@ -197,7 +222,6 @@
 
 (defn delete! [user-id day action-type id]
   (jdbc/with-transaction [tx db/db-uri]
-    (prn (->> id (db/get-by-id tx user-id :orders)))
     (cond
       ;; Delete the order along with all recurrences
       (or (->> id (db/get-by-id tx user-id :orders) :orders/recurrence nil?)
@@ -207,3 +231,16 @@
       ;; Only delete the one day
       :else
       (change-state! tx user-id id day "canceled"))))
+
+;; (delete! 2 "2022-04-20" 240)
+;; (delete! 2 nil 241)
+
+;; (change-state! 2 240 "2022-04-20" "waiting")
+;; (change-state! 2 250 "2022-04-23" "fulfilled")
+;; (get-orders db/db-uri (t/to-inst #inst "2022-04-20T00:00:00Z") (t/to-inst #inst "2022-04-20T00:00:00Z") nil nil)
+;; (get-orders db/db-uri (t/to-inst #inst "2022-04-23T00:00:00Z") (t/to-inst #inst "2022-04-24T00:00:00Z") nil nil)
+;; (get-order db/db-uri 2 242 (t/to-inst #inst "2022-04-20T00:00:00Z"))
+;; (orders-for-days db/db-uri 2 #inst "2022-04-23T00:00:00Z" #inst "2022-04-23T00:00:00Z")
+;; (orders-for-days db/db-uri 2 #inst "2022-04-23T00:00:00Z")
+;; (orders-for-days db/db-uri 2 "2022-04-19")
+;; (get-all 2)
diff --git a/backend/src/chicken_master/time.clj b/backend/src/chicken_master/time.clj
index 548d16f..201d808 100644
--- a/backend/src/chicken_master/time.clj
+++ b/backend/src/chicken_master/time.clj
@@ -2,7 +2,7 @@
   (:import [java.time Instant LocalDate ZoneOffset]
            [java.time.format DateTimeFormatter]
            [java.sql Timestamp]
-           [org.dmfs.rfc5545.recur RecurrenceRule]
+           [org.dmfs.rfc5545.recur RecurrenceRule Freq]
            [org.dmfs.rfc5545 DateTime]))
 
 (defn parse-date [date]
@@ -47,21 +47,102 @@
 (defn earliest [& ds] (->> ds (map to-inst) (sort before) first))
 (defn latest [& ds] (->> ds (map to-inst) (sort after) first))
 (defn between [d1 d2 d3] (and (not (before d2 d1)) (not (after d2 d3))))
+(defn same-day [d1 d2]
+  (when (and d1 d2)
+    (= (format-date d1) (format-date d2))))
 
 (defn now [] (Instant/now))
 (def min-date (parse-date "2020-01-01"))
 (def max-date (.plusSeconds (now) (* 40 356 24 60 60))) ; 40 years from now - can't be bothered to do this properly...
 
+;; Recurrence helpers
+
+(defn to-recur-datetime [d] (-> d to-inst (.toEpochMilli) (DateTime.)))
 (defn recurrence->dates [start rule]
-  (let [iterator (.iterator (RecurrenceRule. rule)
-                            (-> start (.toEpochMilli) (DateTime.)))]
+  (let [iterator (.iterator (RecurrenceRule. rule) (to-recur-datetime start))]
     (take-while identity
                 (repeatedly #(when (.hasNext iterator)
                                (-> iterator (.nextDateTime) (.getTimestamp) (Instant/ofEpochMilli)))))))
 
+(defn next-date
+  "Get the next date after `day`"
+  [start rule day]
+  (->> (recurrence->dates (to-inst start) rule)
+       (filter (partial before (to-inst day)))
+       first))
+
 (defn last-date
   "Get the end date for the given rule"
   [start rule]
   (->> (recurrence->dates (to-inst start) rule)
        (take-while #(before % max-date))
        last))
+
+(defn recurrence-pos
+  "The index of the day in the sequence for `day`."
+  [start rule day]
+  (->> (recurrence->dates (to-inst start) rule)
+       (keep-indexed (fn [i d] (when (same-day d day) i)))
+       first))
+
+(def freq-units {"day" Freq/DAILY "week" Freq/WEEKLY "month" Freq/MONTHLY "year" Freq/YEARLY})
+(defn set-freq [rule freq]
+  (.toString
+   (if rule
+     (doto (RecurrenceRule. rule) (.setFreq (freq-units freq Freq/WEEKLY) true))
+     (RecurrenceRule. (freq-units freq Freq/WEEKLY)))))
+(defn get-freq [rule]
+  (-> rule
+      (RecurrenceRule.)
+      (.getFreq)
+      ((clojure.set/map-invert freq-units))))
+
+(defn get-interval [rule] (.getInterval (RecurrenceRule. rule)))
+(defn set-interval [rule interval]
+  (let [rule (RecurrenceRule. rule)]
+    (.setInterval rule interval)
+    (.toString rule)))
+
+(defn get-count [rule] (.getCount (RecurrenceRule. rule)))
+(defn set-count [rule count]
+  (let [rule (RecurrenceRule. rule)]
+    (.setCount rule count)
+    (.toString rule)))
+
+(defn get-until [rule]
+  (some-> rule (RecurrenceRule.) (.getUntil) (.getTimestamp) (Instant/ofEpochMilli)))
+(defn set-until [rule until]
+  (let [rule (RecurrenceRule. rule)]
+    (.setUntil rule (to-recur-datetime until))
+    (.toString rule)))
+
+(defn split-rule [start rule day]
+  (let [pos (recurrence-pos start rule day)]
+    (cond
+      ;; FIXME: think this through...
+      (nil? pos) nil
+
+      ;; the first date is the one to split on - so just leave it as is
+      (zero? pos) [rule]
+
+      (get-count rule)
+      [(set-count rule pos) (set-count rule (- (get-count rule) pos))]
+
+      (get-until rule)
+      [(set-until rule day) rule]
+
+      :else nil)))
+
+(defn make-rule [{:keys [times until unit every]}]
+  (let [rule (-> nil
+                 (set-freq unit)
+                 (set-interval every))]
+    (if times
+      (set-count rule times)
+      (set-until rule until))))
+
+(defn parse-rule [rule]
+  {:times (get-count rule)
+   :until (get-until rule)
+   :unit (get-freq rule)
+   :every (get-interval rule)})
diff --git a/backend/test/chicken_master/orders_test.clj b/backend/test/chicken_master/orders_test.clj
index 10596ea..d9abb49 100644
--- a/backend/test/chicken_master/orders_test.clj
+++ b/backend/test/chicken_master/orders_test.clj
@@ -10,7 +10,7 @@
    [clojure.test :refer [deftest is testing]]))
 
 (defn raw-order-row [& {:keys [id notes status date user_id user_name products recurrence]
-                        :or {id 1 notes "note" status "pending" date #inst "2020-01-01"
+                        :or {id 1 notes "note" status "waiting" date #inst "2020-01-01"
                              user_id 2 user_name "mr blobby" recurrence nil
                              products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}}]
   (if products
@@ -44,7 +44,7 @@
                               (is (= params [(t/to-db-date t/min-date) (t/to-db-date t/max-date) 123 "1"]))
                               (raw-order-row))]
       (is (= (sut/get-order :tx "1" 123)
-             {:id 1, :notes "note", :recurrence nil :state :pending, :day "2020-01-01",
+             {:id 1, :notes "note", :recurrence nil :state :waiting, :day "2020-01-01",
               :who {:id 2, :name "mr blobby"},
               :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}))))
 
@@ -55,7 +55,7 @@
                               (concat (raw-order-row)
                                       (raw-order-row :id 21)))]
       (is (= (sut/get-order :tx "1" 123)
-             {:id 1, :notes "note", :state :pending, :day "2020-01-01",
+             {:id 1, :notes "note", :state :waiting, :day "2020-01-01",
               :who {:id 2, :name "mr blobby"}, :recurrence nil
               :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}})))))
 
@@ -73,13 +73,13 @@
              {"2020-01-01" [{:id 1, :notes "note", :state :waiting, :day "2020-01-01",
                              :who {:id 2, :name "mr blobby"}, :recurrence nil
                              :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}
-                            {:id 3, :notes "note", :state :pending, :day "2020-01-01",
+                            {:id 3, :notes "note", :state :waiting, :day "2020-01-01",
                              :who {:id 43, :name "John"}, :recurrence nil
                              :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}
-                            {:id 4, :notes "note", :state :pending, :day "2020-01-01",
+                            {:id 4, :notes "note", :state :waiting, :day "2020-01-01",
                              :who {:id 2, :name "mr blobby"}, :recurrence nil
                              :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]
-              "2020-01-03" [{:id 2, :notes "note", :state :pending, :day "2020-01-03",
+              "2020-01-03" [{:id 2, :notes "note", :state :waiting, :day "2020-01-03",
                              :who {:id 2, :name "mr blobby"}, :recurrence nil
                              :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]})))))
 
@@ -105,7 +105,7 @@
            {"2020-01-01" [{:id 1, :notes "note", :state :waiting, :day "2020-01-01",
                            :who {:id 2, :name "mr blobby"}, :recurrence nil
                            :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}
-                          {:id 4, :notes "note", :state :pending, :day "2020-01-01",
+                          {:id 4, :notes "note", :state :waiting, :day "2020-01-01",
                            :who {:id 2, :name "mr blobby"}, :recurrence nil
                            :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]})))))
 
@@ -127,10 +127,6 @@
                                            (raw-order-row :id 1 :status "waiting" :date #inst "2020-01-02")
                                            (raw-order-row :id 4)))]
         (is (= {"2020-01-02" [{:id 1, :notes "note", :recurrence nil,
-                               :who {:id 2, :name "mr blobby"},
-                               :day "2020-01-02", :state :waiting
-                               :products {:eggs {:amount 12, :price nil}, :milk {:amount 3, :price 423}},}
-                              {:id 4, :notes "note", :recurrence nil,
                                :who {:id 2, :name "mr blobby"},
                                :day "2020-01-02", :state :waiting
                                :products {:eggs {:amount 12, :price nil}, :milk {:amount 3, :price 423}}}]}
@@ -157,7 +153,7 @@
            {"2020-01-01" [{:id 1, :notes "note", :state :waiting, :day "2020-01-01",
                            :who {:id 2, :name "mr blobby"}, :recurrence nil
                            :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}
-                          {:id 4, :notes "note", :state :pending, :day "2020-01-01",
+                          {:id 4, :notes "note", :state :waiting, :day "2020-01-01",
                            :who {:id 2, :name "mr blobby"}, :recurrence nil
                            :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]}))))))
 
@@ -170,7 +166,7 @@
                                 (is (= by {:id 1 :user_id :user-id})))
                   sql/query (constantly (raw-order-row :id 4))]
     (is (= (sut/delete! :user-id nil nil 1)
-           {"2020-01-01" [{:id 4, :notes "note", :state :pending, :day "2020-01-01",
+           {"2020-01-01" [{:id 4, :notes "note", :state :waiting, :day "2020-01-01",
                            :who {:id 2, :name "mr blobby"}, :recurrence nil
                            :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]}))))
 
@@ -196,7 +192,7 @@
         (testing "deleting without provided a date will remove the whole order"
           (reset! invocations [])
           (is (= (sut/delete! :user-id nil nil 1)
-                 {"2020-01-01" [{:id 4, :notes "note", :state :pending, :day "2020-01-01",
+                 {"2020-01-01" [{:id 4, :notes "note", :state :waiting, :day "2020-01-01",
                                  :who {:id 2, :name "mr blobby"}, :recurrence nil
                                  :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]}))
           (is (= [["deleting" :orders {:id 1 :user_id :user-id}]]
@@ -205,7 +201,7 @@
         (testing "a provided date is ignored and will full delete"
           (reset! invocations [])
           (is (= (sut/delete! :user-id "2020-01-01" nil 1)
-                 {"2020-01-01" [{:id 4, :notes "note", :state :pending, :day "2020-01-01",
+                 {"2020-01-01" [{:id 4, :notes "note", :state :waiting, :day "2020-01-01",
                                  :who {:id 2, :name "mr blobby"}, :recurrence nil
                                  :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]}))
           (is (= [["deleting" :orders {:id 1 :user_id :user-id}]]
@@ -218,7 +214,7 @@
 
             (reset! invocations [])
           (is (= (sut/delete! :user-id "2020-01-01" :single 1)
-                 {"2020-01-01" [{:id 4, :notes "note", :state :pending, :day "2020-01-01",
+                 {"2020-01-01" [{:id 4, :notes "note", :state :waiting, :day "2020-01-01",
                                  :who {:id 2, :name "mr blobby"}, :recurrence nil
                                  :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]}))
             (is (= [["deleting" :orders {:id 1 :user_id :user-id}]]
@@ -237,8 +233,8 @@
         (testing "deleting with :all remove the whole order"
           (reset! invocations [])
           (is (= (sut/delete! :user-id nil :all 1)
-                 {"2020-01-01" [{:id 4, :notes "note", :state :pending, :day "2020-01-01",
-                                 :who {:id 2, :name "mr blobby"}, :recurrence "FREQ=DAILY;COUNT=1"
+                 {"2020-01-01" [{:id 4, :notes "note", :state :waiting, :day "2020-01-01",
+                                 :who {:id 2, :name "mr blobby"}, :recurrence {:times 1, :until nil, :unit "day", :every 1}
                                  :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]}))
           (is (= [["deleting" :orders {:id 1 :user_id :user-id}]]
                  @invocations)))
@@ -246,8 +242,8 @@
         (testing "deleting with a provided date will soft remove a single order by updating it if it exists"
           (reset! invocations [])
           (is (= (sut/delete! :user-id "2020-01-01" nil 1)
-                 {"2020-01-01" [{:id 4, :notes "note", :state :pending, :day "2020-01-01",
-                                 :who {:id 2, :name "mr blobby"}, :recurrence "FREQ=DAILY;COUNT=1"
+                 {"2020-01-01" [{:id 4, :notes "note", :state :waiting, :day "2020-01-01",
+                                 :who {:id 2, :name "mr blobby"}, :recurrence {:times 1, :until nil, :unit "day", :every 1}
                                  :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]}))
           (is (= [["updating" :recurrence_exceptions {:status "canceled"}
                    {:order_id 1, :order_date (t/to-db-date "2020-01-01")}]]
@@ -260,8 +256,8 @@
 
             (reset! invocations [])
           (is (= (sut/delete! :user-id "2020-01-01" nil 1)
-                 {"2020-01-01" [{:id 4, :notes "note", :state :pending, :day "2020-01-01",
-                                 :who {:id 2, :name "mr blobby"}, :recurrence "FREQ=DAILY;COUNT=1"
+                 {"2020-01-01" [{:id 4, :notes "note", :state :waiting, :day "2020-01-01",
+                                 :who {:id 2, :name "mr blobby"}, :recurrence {:times 1, :until nil, :unit "day", :every 1}
                                  :products {:eggs {:amount 12 :price nil} :milk {:amount 3 :price 423}}}]}))
             (is (= [["inserting" :recurrence_exceptions {:order_id 1, :order_date (t/to-db-date "2020-01-01") :status "canceled"}]]
                    @invocations))))))))
diff --git a/frontend/resources/public/css/screen.css b/frontend/resources/public/css/screen.css
index 601c2b0..b45d999 100644
--- a/frontend/resources/public/css/screen.css
+++ b/frontend/resources/public/css/screen.css
@@ -75,6 +75,27 @@ html body .popup .popup-content {
   width: 15%;
 }
 
+html body .popup .popup-content .recurrence {
+  padding: 0.5em 0em 1em 1em;
+}
+
+html body .popup .popup-content .recurrence #recurrence-times {
+  width: 2em;
+}
+
+html body .popup .popup-content .recurrence .recurrence-freq .input-item {
+  display: inline-block;
+}
+
+html body .popup .popup-content .recurrence .recurrence-freq #recurrence-every {
+  width: 2em;
+}
+
+html body .popup .popup-content .recurrence .recurrence-freq label[for="recurrence-every"] {
+  min-width: 1em;
+  padding: 5px;
+}
+
 html body .popup .popup-content .input-item label {
   min-width: 60px;
   display: inline-block;
diff --git a/frontend/src/chicken_master/calendar.cljs b/frontend/src/chicken_master/calendar.cljs
index eb9db53..09d9f4d 100644
--- a/frontend/src/chicken_master/calendar.cljs
+++ b/frontend/src/chicken_master/calendar.cljs
@@ -9,6 +9,17 @@
    [chicken-master.events :as event]
    [chicken-master.time :as time]))
 
+(defn int-or-nil [val]
+  (let [i (js/parseInt val)]
+    (when-not (js/isNaN i) i)))
+
+(defn parse-recurrence [{:strs [recurrence-till recurrence-times recurrence-unit recurrence-every]}]
+  (when (or (int-or-nil recurrence-times) (seq recurrence-till))
+    {:times (int-or-nil recurrence-times)
+     :until (when (seq recurrence-till) recurrence-till)
+     :unit recurrence-unit
+     :every (or (int-or-nil recurrence-every) 1)}))
+
 (defn format-raw-order [{:strs [day who who-id notes] :as raw-values}]
   {:who {:name who
          :id (if (prod/num-or-nil who-id)
@@ -20,6 +31,7 @@
                     first :id))}
    :day day
    :notes notes
+   :recurrence (parse-recurrence raw-values)
    :products (prod/collect-products (remove (comp #{"who" "notes"} first) raw-values))})
 
 (defn get-group-products [customers who]
@@ -40,7 +52,7 @@
          products))
 
 (defn order-form
-  ([order] (order-form order #{:who :day :notes :products :group-products}))
+  ([order] (order-form order #{:who :day :notes :products :group-products :recurrence}))
   ([order fields]
    (let [customers @(re-frame/subscribe [::subs/available-customers])
          available-prods @(re-frame/subscribe [::subs/available-products])
@@ -71,6 +83,18 @@
         (when (:notes fields)
           (html/input :notes "notka"
                       {:default (:notes @state)}))
+        (when (:recurrence fields)
+          [:details {:class :recurrence-details}
+           [:summary "powtarzanie"]
+           [:div {:class :recurrence}
+            (html/input :recurrence-times "ile razy" {:type :number :default (-> order :recurrence :times)})
+            (html/input :recurrence-till "do kiedy" {:type :date :default (-> order :recurrence :until)})
+            [:div {:class :recurrence-freq}
+             (html/input :recurrence-every "co" {:type :number :default (-> order :recurrence :every)})
+             [:select {:name :recurrence-unit :id :recurrence-unit :defaultValue (-> order :recurrence :unit)}
+              [:option {:key :day :value "day"} "dni"]
+              [:option {:key :week :value "week"} "tygodni"]
+              [:option {:key :month :value "month"} "miesięcy"]]]]])
         (when (:products fields)
           [prod/products-edit (:products @state)
            :available-prods available-prods
@@ -123,7 +147,6 @@
        (->> (if (settings :hide-fulfilled-orders)
               (remove (comp #{:fulfilled} :state) orders)
               orders)
-            (remove (comp #{:canceled} :state))
             (map (partial format-order settings))
             doall)
        (when (settings :show-day-add-order)
diff --git a/frontend/src/chicken_master/css.clj b/frontend/src/chicken_master/css.clj
index dc255c5..d9cbad5 100644
--- a/frontend/src/chicken_master/css.clj
+++ b/frontend/src/chicken_master/css.clj
@@ -49,8 +49,13 @@
              :margin "15% auto"
              :padding "20px"
              :border "1px solid #888"
-             :width "15%"
-             }
+             :width "15%"}
+      [:.recurrence {:padding "0.5em 0em 1em 1em"}
+       [:#recurrence-times {:width "2em"}]
+       [:.recurrence-freq
+        [:.input-item {:display :inline-block}]
+        [:#recurrence-every {:width "2em"}]
+        ["label[for=\"recurrence-every\"]" {:min-width "1em" :padding "5px"}]]]
       [:.input-item
        [:label {:min-width "60px"
                 :display :inline-block}]]
diff --git a/frontend/src/chicken_master/events.cljs b/frontend/src/chicken_master/events.cljs
index ddfc012..0131ef7 100644
--- a/frontend/src/chicken_master/events.cljs
+++ b/frontend/src/chicken_master/events.cljs
@@ -119,7 +119,7 @@
     :http-xhrio (http-post "orders"
                            (merge
                             (select-keys order [:id :day :hour :state :order-date])
-                            (select-keys form [:id :day :hour :state :who :notes :products])))}))
+                            (select-keys form [:id :day :hour :state :who :notes :products :recurrence])))}))
 
 (re-frame/reg-event-fx
  ::process-fetched-days
@@ -128,7 +128,14 @@
             (update :current-days (fn [current-days]
                                     (for [[day orders] current-days]
                                       [day (if (contains? days day) (days day) orders)])))
-            (update :orders #(reduce (fn [m order] (assoc m (:id order) order)) % (mapcat second days))))
+            (update :orders (fn [orders] (->> days
+                                             (mapcat second)
+                                             (group-by :id)
+                                             vals
+                                             (map (fn [items] (->> items
+                                                                  (reduce #(assoc %1 (:day %2) (:state %2)) {})
+                                                                  (assoc (first items) :days))))
+                                             (reduce #(assoc %1 (:id %2) %2) orders)))))
     :dispatch [::stop-loading]}))
 
 (re-frame/reg-event-fx
@@ -146,7 +153,11 @@
  (fn [{{:keys [start-date orders] :as db} :db} [_ day]]
    (let [day (or day start-date)
          days (into #{} (time/get-weeks day 2))
-         filtered-orders (->> orders vals (filter (comp days :day)) (group-by :day))]
+         filtered-orders (->> orders vals
+                              (mapcat (fn [order]
+                                        (map #(assoc order :day (first %) :state (second %))
+                                             (:days order))))
+                              (filter (comp days :day)) (group-by :day))]
      {:db (assoc db
                  :start-date day
                  :current-days (map #(vector % (get filtered-orders %)) (sort days)))
diff --git a/frontend/test/chicken_master/calendar_test.cljs b/frontend/test/chicken_master/calendar_test.cljs
index 9b515db..4fbcca7 100644
--- a/frontend/test/chicken_master/calendar_test.cljs
+++ b/frontend/test/chicken_master/calendar_test.cljs
@@ -83,11 +83,11 @@
 
 (deftest format-raw-order-test
   (testing "no products"
-    (is (= (sut/format-raw-order {}) {:who {:name nil :id nil} :day nil :notes nil :products {}}))
+    (is (= (sut/format-raw-order {}) {:who {:name nil :id nil} :day nil :notes nil :products {} :recurrence nil}))
     (is (= (sut/format-raw-order {"who" "bla" "notes" "ble"})
-           {:who {:name "bla" :id nil} :day nil :notes "ble" :products {}}))
+           {:who {:name "bla" :id nil} :day nil :notes "ble" :products {} :recurrence nil}))
     (is (= (sut/format-raw-order {"who" "bla" "who-id" "123" "notes" "ble" "day" "2020-10-10"})
-           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble" :products {}})))
+           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble" :products {} :recurrence nil})))
 
   (testing "decent products"
     (is (= (sut/format-raw-order {"who" "bla" "who-id" "123" "notes" "ble"
@@ -95,7 +95,7 @@
                                   "product-eggs" "eggs" "amount-eggs" "12"
                                   "product-cows" "cows" "amount-cows" "22" "price-cows" "2.32"
                                   "product-milk" "milk" "amount-milk" "3.2"})
-           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble"
+           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble" :recurrence nil
             :products {:eggs {:amount 12} :cows {:amount 22 :price 232} :milk {:amount 3.2}}})))
 
   (testing "duplicate products"
@@ -105,7 +105,7 @@
                                   "product-cows1" "cows" "amount-cows1" "1"
                                   "product-cows2" "cows" "amount-cows2" "2"
                                   "product-milk" "milk" "amount-milk" "3.2"})
-           {:who {:name "bla" :id 123} :day nil :notes "ble"
+           {:who {:name "bla" :id 123} :day nil :notes "ble" :recurrence nil
             :products {:eggs {:amount 24} :cows {:amount 3} :milk {:amount 3.2}}})))
 
   (testing "unselected are ignored"
@@ -115,7 +115,7 @@
                                   "product-bad2" "" "amount-bad2" "1"
                                   "product-milk" "milk" "amount-milk" "3.2"
                                   "product-bad3" "" "amount-bad3" "2"})
-           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble"
+           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble" :recurrence nil
             :products {:eggs {:amount 12} :milk {:amount 3.2}}})))
 
   (testing "prices are handled"
@@ -124,7 +124,7 @@
                                   "product-eggs1" "eggs" "amount-eggs1" "0" "price-eggs1" "1.0"
                                   "product-cow" "cow" "amount-cow" "0"
                                   "product-milk" "milk" "amount-milk" "3.2"})
-           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble"
+           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble" :recurrence nil
             :products {:eggs {:amount 12 :price 431} :milk {:amount 3.2}}})))
 
   (testing "items with 0 are removed"
@@ -133,8 +133,30 @@
                                   "product-eggs1" "eggs" "amount-eggs1" "0"
                                   "product-cow" "cow" "amount-cow" "0"
                                   "product-milk" "milk" "amount-milk" "3.2"})
-           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble"
-            :products {:eggs {:amount 12} :milk {:amount 3.2}}}))))
+           {:who {:name "bla" :id 123} :day "2020-10-10" :notes "ble" :recurrence nil
+            :products {:eggs {:amount 12} :milk {:amount 3.2}}})))
+
+  (testing "recurrence object is not created when empty vals provided"
+    (is (= (sut/format-raw-order {"recurrence-till" ""
+                                  "recurrence-times" ""
+                                  "recurrence-unit" ""
+                                  "recurrence-every" ""})
+           {:who {:name nil :id nil} :day nil :notes nil :products {} :recurrence nil})))
+
+  (testing "recurrence object is created when times provided"
+    (is (= (sut/format-raw-order {"recurrence-till" ""
+                                  "recurrence-times" "6"
+                                  "recurrence-unit" "week"
+                                  "recurrence-every" "3"})
+           {:who {:name nil :id nil} :day nil :notes nil :products {} :recurrence {:times 6, :until nil, :unit "week", :every 3}})))
+
+  (testing "recurrence object is created when till provided"
+    (is (= (sut/format-raw-order {"recurrence-till" "2020-01-01"
+                                  "recurrence-times" ""
+                                  "recurrence-unit" "week"
+                                  "recurrence-every" "3"})
+           {:who {:name nil :id nil} :day nil :notes nil :products {}
+            :recurrence {:times nil, :until "2020-01-01", :unit "week", :every 3}}))))
 
 (def customers
   [{:id 1 :name "mr blobby" :product-groups {"group 1" {:products {:eggs 1 :carrots 2}}
diff --git a/frontend/test/chicken_master/events_test.cljs b/frontend/test/chicken_master/events_test.cljs
index 195aa1b..65ec2a2 100644
--- a/frontend/test/chicken_master/events_test.cljs
+++ b/frontend/test/chicken_master/events_test.cljs
@@ -20,12 +20,12 @@
   (rf/reg-event-fx event (fn [_ [_ & params]] (validator params) nil)))
 
 (def sample-orders
-  [{:id 1 :day "2020-01-02"} {:id 2 :day "2020-01-02"} {:id 3 :day "2020-01-02"}
-   {:id 4 :day "2020-01-04"}
-   {:id 5 :day "2020-01-06"} {:id 6 :day "2020-01-06"}])
+  [{:id 1 :day "2020-01-02" :state :waiting} {:id 2 :day "2020-01-02" :state :waiting} {:id 3 :day "2020-01-02" :state :waiting}
+   {:id 4 :day "2020-01-04" :state :waiting}
+   {:id 5 :day "2020-01-06" :state :waiting} {:id 6 :day "2020-01-06" :state :waiting}])
 
 (def sample-orders-by-day (group-by :day sample-orders))
-(def sample-orders-by-id (reduce #(assoc %1 (:id %2) %2) {} sample-orders))
+(def sample-orders-by-id (reduce #(assoc %1 (:id %2) (assoc %2 :days {(:day %2) (:state %2)})) {} sample-orders))
 
 (deftest hide-modal
   (testing "models can be hidden"
@@ -143,7 +143,7 @@
      (rf/dispatch [::sut/edit-order "2020-01-01" 1])
 
      (is (= @(rf/subscribe [::subs/editted-order])
-            {:show true :day "2020-01-01" :id 1}))))
+            {:show true :day "2020-01-01" :id 1 :order-date "2020-01-01"}))))
 
   (testing "new orders can be edited"
     (rf-test/run-test-sync
@@ -152,7 +152,7 @@
      (rf/dispatch [::sut/edit-order "2020-01-01" :new-order])
 
      (is (= @(rf/subscribe [::subs/editted-order])
-            {:show true :day "2020-01-01" :state :waiting}))))
+            {:show true :day "2020-01-01" :state :waiting :order-date "2020-01-01"}))))
 
   ;; FIXME: the request handler is not being overloaded
   (testing "orders are fulfilled"
@@ -273,11 +273,11 @@
 
      (is (= @(rf/subscribe [::subs/current-days])
             [["2020-01-01" [{:id :left-as-is :day "2020-01-01"}]]
-             ["2020-01-02" [{:id 1 :day "2020-01-02"} {:id 2 :day "2020-01-02"} {:id 3 :day "2020-01-02"}]]
+             ["2020-01-02" [{:id 1 :day "2020-01-02" :state :waiting} {:id 2 :day "2020-01-02" :state :waiting} {:id 3 :day "2020-01-02" :state :waiting}]]
              ["2020-01-03" nil]
-             ["2020-01-04" [{:id 4 :day "2020-01-04"}]]
+             ["2020-01-04" [{:id 4 :day "2020-01-04" :state :waiting}]]
              ["2020-01-05" nil]
-             ["2020-01-06" [{:id 5 :day "2020-01-06"} {:id 6 :day "2020-01-06"}]]
+             ["2020-01-06" [{:id 5 :day "2020-01-06" :state :waiting} {:id 6 :day "2020-01-06" :state :waiting}]]
              ["2020-01-07" nil]])))))
 
 (deftest test-show-from-date
@@ -297,11 +297,14 @@
             [["2019-12-30" nil]
              ["2019-12-31" nil]
              ["2020-01-01" nil]
-             ["2020-01-02" [{:id 1, :day "2020-01-02"} {:id 2, :day "2020-01-02"} {:id 3, :day "2020-01-02"}]]
+             ["2020-01-02" [{:id 1, :day "2020-01-02" :state :waiting, :days {"2020-01-02" :waiting}}
+                            {:id 2, :day "2020-01-02" :state :waiting, :days {"2020-01-02" :waiting}}
+                            {:id 3, :day "2020-01-02" :state :waiting, :days {"2020-01-02" :waiting}}]]
              ["2020-01-03" nil]
-             ["2020-01-04" [{:id 4, :day "2020-01-04"}]]
+             ["2020-01-04" [{:id 4, :day "2020-01-04" :state :waiting, :days {"2020-01-04" :waiting}}]]
              ["2020-01-05" nil]
-             ["2020-01-06" [{:id 5, :day "2020-01-06"} {:id 6, :day "2020-01-06"}]]
+             ["2020-01-06" [{:id 5, :day "2020-01-06" :state :waiting, :days {"2020-01-06" :waiting}}
+                            {:id 6, :day "2020-01-06" :state :waiting, :days {"2020-01-06" :waiting}}]]
              ["2020-01-07" nil] ["2020-01-08" nil] ["2020-01-09" nil]
              ["2020-01-10" nil] ["2020-01-11" nil] ["2020-01-12" nil]]))))
 
@@ -314,11 +317,14 @@
             [["2019-12-30" nil]
              ["2019-12-31" nil]
              ["2020-01-01" nil]
-             ["2020-01-02" [{:id 1, :day "2020-01-02"} {:id 2, :day "2020-01-02"} {:id 3, :day "2020-01-02"}]]
+             ["2020-01-02" [{:id 1, :day "2020-01-02" :state :waiting, :days {"2020-01-02" :waiting}}
+                            {:id 2, :day "2020-01-02" :state :waiting, :days {"2020-01-02" :waiting}}
+                            {:id 3, :day "2020-01-02" :state :waiting, :days {"2020-01-02" :waiting}}]]
              ["2020-01-03" nil]
-             ["2020-01-04" [{:id 4, :day "2020-01-04"}]]
+             ["2020-01-04" [{:id 4, :day "2020-01-04" :state :waiting, :days {"2020-01-04" :waiting}}]]
              ["2020-01-05" nil]
-             ["2020-01-06" [{:id 5, :day "2020-01-06"} {:id 6, :day "2020-01-06"}]]
+             ["2020-01-06" [{:id 5, :day "2020-01-06" :state :waiting, :days {"2020-01-06" :waiting}}
+                            {:id 6, :day "2020-01-06" :state :waiting, :days {"2020-01-06" :waiting}}]]
              ["2020-01-07" nil] ["2020-01-08" nil] ["2020-01-09" nil]
              ["2020-01-10" nil] ["2020-01-11" nil] ["2020-01-12" nil]]))))
 
@@ -331,11 +337,14 @@
             [["2019-12-30" nil]
              ["2019-12-31" nil]
              ["2020-01-01" nil]
-             ["2020-01-02" [{:id 1, :day "2020-01-02"} {:id 2, :day "2020-01-02"} {:id 3, :day "2020-01-02"}]]
+             ["2020-01-02" [{:id 1, :day "2020-01-02" :state :waiting, :days {"2020-01-02" :waiting}}
+                            {:id 2, :day "2020-01-02" :state :waiting, :days {"2020-01-02" :waiting}}
+                            {:id 3, :day "2020-01-02" :state :waiting, :days {"2020-01-02" :waiting}}]]
              ["2020-01-03" nil]
-             ["2020-01-04" [{:id 4, :day "2020-01-04"}]]
+             ["2020-01-04" [{:id 4, :day "2020-01-04" :state :waiting, :days {"2020-01-04" :waiting}}]]
              ["2020-01-05" nil]
-             ["2020-01-06" [{:id 5, :day "2020-01-06"} {:id 6, :day "2020-01-06"}]]
+             ["2020-01-06" [{:id 5, :day "2020-01-06" :state :waiting, :days {"2020-01-06" :waiting}}
+                            {:id 6, :day "2020-01-06" :state :waiting, :days {"2020-01-06" :waiting}}]]
              ["2020-01-07" nil] ["2020-01-08" nil] ["2020-01-09" nil]
              ["2020-01-10" nil] ["2020-01-11" nil] ["2020-01-12" nil]])))))